1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Dimas [21]
4 years ago
11

Find an explicit formula for the arithmetic sequence 12, 5, -2, -9,...

Mathematics
1 answer:
Vadim26 [7]4 years ago
4 0

Answer:

an = 12 -7(n-1)

an = 19-7n

Step-by-step explanation:

The explicit formula for an arithmetic sequence is

an = a1 +d(n-1) where a1 is the first term and d is the common difference

a1 =12

We find d by taking the second term and subtracting the first term

d = 5-12

d = -7

an = 12 -7(n-1)

We can simplify this

an = 12 -7n+7

an = 19-7n

You might be interested in
after a school election,Jamie had 3/8 of the votes Richard the only other candidate had 75 votes how many people voted for jaime
dalvyx [7]
Jamie and Richard are the only contestants of the election.

Jamie got 3/8 of the total votes.

Richard got = 1 - 3/8 = (8-3)/8 = 5/8 of total votes

Number of votes Richard got = 75

So 5/8 of total votes = 75

Total votes = 75 ÷ 5/8 = 75 × 8/5 = 120

Jamie got = 120 - 75 = 45 Votes
8 0
4 years ago
Pl help it’s for a grade I will give you Brainly if right
raketka [301]

Answer:

2/4

Step-by-step explanation:

7 0
3 years ago
Please help me with this question​
stira [4]

Step-by-step explanation:

The river is 1000 m wide, and the boat moves at 3 m/s, so the time it takes to cross the river is:

t = (1000 m) / (3 m/s)

t = 333.3 s

The river flows at 2 m/s, so by the time he reaches the other bank, he drifts downstream a distance of:

d = (2 m/s) (333.3 s)

d = 666.7 m

4 0
3 years ago
Which scatterplot has a correlation coefficient closest to r= 1?
Ksju [112]

Answer:

-1

Step-by-step explanation:

in statistics, the correlation coefficient r measures the strength and direction of a linear relationship between two variables on a scatterplot. The value of r is always between +1 and –1. To interpret its value, see which of the following values your correlation r is closest to: Exactly –1.

hope this help

4 0
3 years ago
Read 2 more answers
Find the area and perimeter of each composite figure.<br> 1.<br> 18 m<br> 13 m<br> 10 m<br> 30 m
sergejj [24]
Sorry if I am wrong I am not 100% sure I think it’s 13
6 0
4 years ago
Other questions:
  • 32.443 rounded to the nearest hundredth
    14·2 answers
  • What is 1.8399 rounded to the nearest tenth
    10·2 answers
  • I need help with these plzzz
    10·1 answer
  • Determine the number of solutions for each quadratic.
    9·2 answers
  • Margarito opened a savings account with a $500 deposit and a simple interest rate of 5.6%. If there were no deposits or withdraw
    15·1 answer
  • Brendan ran a total of 8 miles over the course of 4 track practices.
    9·2 answers
  • A third line intersects two lines (A transversal). Which condition would always make the two lines parallel?
    11·1 answer
  • What is 20+20909909090909090909090909090909090
    10·1 answer
  • Heather earns $16 for each hour she works as a lifeguard. Choose the equation that models the situation, where h represents the
    10·1 answer
  • What is the answer pls helppppppppppppppppppppppn=6x35+4=?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!